A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5985-00-586-5508
NSN 7035-00-337-8745
NSN 5975-00-062-7976
NSN 4140-01-561-1987
NSN 6645-01-400-2119
NSN 5945-01-025-4256
NSN 5835-00-948-8972
NSN 5985-00-056-2436
NSN 5930-00-580-3085
NSN 6620-01-528-7510
NSN 5920-01-424-0745
NSN 5998-00-714-5899